Charlie J
Cruisin' Guzzisti
Gday,I ,nor the professionals that have tried,have never been able to balance the T/B's on my 1100 Griso. I read and reread the excellent posts on this board about this subject.I purchased a VDST (BRILLIANT)made a manometer (mk4) and tried to balance my TB's to no avail(@3000rpm) the vacum drops off the L.H.S. then reappers @4-4500 rpm. If the R.H.S. butterfly is opened to compensate it goes like dog shit. Thanx to Mario at Thunderbikes W.A. one by one I swapped Injectors,Lambda probe,E.C.U. (an 8 valve one with the 03 1100 map),stepper motor and throttle bodies. Still the same drama. I opened valve clearances from 0.1 and 0.15 to 0.15 and 0.2 and this marginally eased the problem. Out with the dial indicator and a degree wheel bolted to the alternator drive pulley and reset valve clearance to 1.5mm and what do you know ?
The L.H. inlet valve is opened higher for longer at full lift than the R.H.S. The flanks align quite well with 2 degrees difference in opening and 3 degrees difference in closing. The R.H.S. exhaust is at or near full lift much longer and higher than the L.H.S.The closing flanks align quite well with a small deviation on the opening flank biased towards the R.H.S.
A golden opportunity to play with cams-NO. Due to the fact this is a budget operation and I cant afford to improve the fuelling it will be a new OEM one with new followers to suit please.
The L.H. inlet valve is opened higher for longer at full lift than the R.H.S. The flanks align quite well with 2 degrees difference in opening and 3 degrees difference in closing. The R.H.S. exhaust is at or near full lift much longer and higher than the L.H.S.The closing flanks align quite well with a small deviation on the opening flank biased towards the R.H.S.
A golden opportunity to play with cams-NO. Due to the fact this is a budget operation and I cant afford to improve the fuelling it will be a new OEM one with new followers to suit please.